Condensed Consolidated Balance Sheet (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 490	$ 583
Treasury bills	5,200	5,197
Available for sale securities	3,735	2,830
Trade receivables, less allowance for doubtful accounts of $9	809	577
Inventories	1,212	1,057
Income tax receivable	0	54
Other current assets	83	81
Total current assets	11,529	10,379
Property and equipment, net	1,155	1,174
Total assets	12,684	11,553
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	171	75
Accrued expenses	328	195
Deferred revenue	65	70
Accrued income tax	51	0
Total current liabilities	615	340
Deferred income tax liability	1,415	1,078
Commitments and contingencies
Stockholders' equity
Common stock par value $0.10 per share; authorized 10,000,000 shares; issued and outstanding: 3,388,488 and 3,381,999 shares, respectively	339	338
Additional paid-in capital	1,558	1,541
Retained earnings	6,505	6,565
Accumulated other comprehensive income (unrealized gain on available for sale securities, net of income tax)	2,252	1,691
Total stockholders' equity	10,654	10,135
Total liabilities and stockholders' equity	$ 12,684	$ 11,553